Improvement in ore-jiggers



S- BRADLEY.

Ore-Jiggers.

No.199,5o2.' Patented Jan. 22,1878.

.Ewevvor:

N.FETERS, FHDTO-LITHOGRAPHER, WASHINGTON, n76.

, convenience, and cheapness,

UNITED STATES P TENT-TOFFEE.

SAMUEL BRADLEY, or MAUOH OHUNK, NNSY VA IA.

IMPROVEMENT lNORE-UIGGERS.

@ I Specification forming part of Letters Patent No. 199,502, datedJanuary .22, 1878; application filed September 26, 1877.

Toall whom it may-concern:

Be it known that I, SAMUEL BRADLEY, of Mauch Chunk, in the county ofCarbon and State of Pennsylvania, have invented certain new and usefulImprovements in Coal and Ore Jigs and Separators; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, which. will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked thereon, whichform a part of this specification.

Heretofore in separating theslate from the coal there never has been anydifiiculty in maintaining a bed of the heavier slate; but

the trouble has been, with all the machines yet invented, that theycannot concentrate and collect the slate in the right place, so as todischarge the bed of slate as it accumulates (whetherfaster or slower)Without coal being mingled with it when passing through the valve orgate. There is consequently a loss of coal.

The object of my invention is the construction of a receptacle forseparating the slate from anthracite coal, and the heavier substancefrom iron ore, which will collect the heavier material at one and theright place, where the valve or slide-gate is fixed. My idea is toconcentrate the slate, &c., as near as possible over one point, and tohave more depth of it there, so that the bottom of it can be dischargedfrom the bed or pile, according as it accumulates. This will prevent thecoal from mingling with the slate, as the bed of slate gathered at onepoint will be too thick for the coal to mix therewith.

My object is also to prepare a separator for and simplicity, that goodand clean work may be done rapidly.

My object is also to construct a machine that will do good work when itis old and worn, as well as when itis new. This I accomplish in thefeatures of the receptacle, in combination with the valve or slide-gateO and spindle B, as is more fully hereinafter explained.

The receptacle consists of a box or tub of the form of a greater segmentof a circle, and

, provided attheline of section of the circle The" bottom A A may be allone, and pitch in a continuous and unbroken line, making the receptacleget deeper in shovel form, while the top of it is left level, for aperfect discharge of coal.

The inclination of these bottoms A A are just pitch enough to allow theslate to reach the slide-gate or valve 0, while the coal is distributedalong and around the rim, to be discharged there. The lower bottomfarthest from where the coal is filled in, A, is formed like ashovelthat is, it pitches with a concave to where the slide-gate orvalve C is fixedthat the slate may gather easily there to be discharged.The receptacle, by the inelina tion of the bottoms A A, gets graduallydeeper in only one direction as it approaches the coal and slatedischarges.

The object of the flange D is to shorten and lessen the depth of thetank, and to prevent the receptacle from a circular swinging vibratorymotion, and also for filling and starting the coal rapidly, that it willnot pile up, but be delivered as fastor slow as it comes in.

The object of constructing the valve or slidegate 0 as it is, is to haveits capacity for discharging in one and the smallest place possible,where the slate-bed has the most depth and least surface, which willprevent the mingling of the coal with the slate. Also, my object is tohave the slate gate or valve 0 to slide in closing and opening, that itmay be adjusted with a lever in the simplest way possible, andindependent of any connection with the spindle for operating; A

The object of keeping the spindle independent and free from slide-gateor valveO and the other fixtures is, that it can be fastened tothe'receptacle out of center, that the weight of coal may be equallydistributed around the spindle to prevent friction; also, I

that there may be less hinderances to the free passage of coal, and thatthe reciprocating ,.vertfcal motion can be fixed in themost sim- .7

ple and durable and cheap manner possible; and instead of having theholes F in the bottom, or perforations tapering regularly, as is thecasein all other machines, I taper them all one-sided-that is, one sideof the hole is vertical, gradually leaning on the other side, (a leaningtapering hole,) tapering upwardly, and leaning toward the deepest sideof the receptacle E. The object of this is that the jets of water willhelp carry or forward the coal in the receptacle toward the places fordischarging the coal and slate. This increases the capacity of themachine to a greater extent.

The receptacle works, under water in an ordinary tank, with the ordinaryreciprocating and rotarymotion, and the tank is partitioned to'separatethe slate from the coal, and from whence the coal is carried out anddischarged into' a chute leading to the car or pocket provided for thatpurpose.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

videdat the-line-of section of the circle with the straight verticalflange D and with bottom A A, substantially as shown.

3. The combination of the receptacle, being in form the greater part ofa segment of a circle, and having the flanges D and E and floor orbottom A A, and of the valve or slidegate 0, as described.

In testimonythat I claim the foregoing as my own I affix my signature inthe presence .of two witnesses.

ALLEN CRAIG, F. BERTOLETTE.

